what is the copper foil tape used for

Copper Foil Tape For HDMI

• Nowadays, with the rapid popularity of HD devices, the HDMI interface is also widely used.
  The HDMI interface cable is a non-compression transmission HD audio and video cable, the data capacity, efficiency, and signal transmission of the cable are much greater than the pure audio cable or video cable, in order to ensure the HDMI data transmission capacity, speed, and data transmission signal anti-interference, solve THE EMC cover of HDMI cable needs to be particularly important. Because it is directly related to the output effect of the HD equipment terminal.
• The purpose of shielding HDMI cables with copper foil tape is to prevent signals inside and outside the shield from interfering with each other, thus interfering with audio and video transmission. The shielding effect of the shielding layer is closely related to the coverage density of the shielding material, the higher the density, the better the electromagnetic shielding effect.

Copper Foil Tape For Transformer

• Copper foil tape is used to shield the layer in the transformer, that is, wrap a layer of copper foil around the primary coil and then wrap the secondary coil, the copper foil leads to a head-to-earth and can play a shielding role.
• A High-frequency transformer will wind a circle of self-adhesive copper foil, this is to prevent the external high-frequency interference signal string into the machine, so there is an electrostatic shielding layer between the primary and secondary transformer, a very thin layer of copper foil can not short circuit, generally connected with the steel bracket of the transformer, and it is connected to the machine bottom line.
• In addition, the shielding layer of conductive copper foil tape greatly reduces the distributed capacitance between the primary coil and reduces the transmission of high-frequency stray interference signals. Because the equivalent capacitance is in series after isolation, the capacitance between the first stage naturally becomes smaller. The high-frequency component can be discharged directly by the capacitance to the ground.

Copper foil tape for EMC shielding of mobile phones

• Strong viscosity, anti - warping, good EMC shielding effect, and excellent heat dissipation function.